Signaling system.



BEST A? COPY H. 0. HUGH.

SIGNALIEG SYSTEM. APPLICATION FILED IEB.15, 1909.

lmz zn Patented oct. 29, 1912.

BEIGE, 9F SKNDWICH, 1 532 51 01 SANDKVICI-I,

ILLIE'OIS, ASSItE-NOR TO SANBWICH ELEGTREi! (HEM- ILLINOIS, A GJRPORATION OF ILLINOIS.

SIGNALING SKILTEM.

specificationof .ers Pat ent.

lPatented obese, ism;

1th all? whom it may concern: .15 known that i, linear O. linen, c1t1- eted States, residing at Sandthe county of Dekalb and State of haveinvented a certain new and e following is a full, clear, condescription,reference being to the r companying drawings, formr his specification.nvention relates to'signaling sysor its object the provision a-l sendingdevices and realreceisvihg apparatus, whereby it post ole to obtain acontinuous indication r 0111 a signal that has been called, and one em vodi-ment of the invention contemplates the continuous operation ofthisreturn' sigindicat-or until said return signaling appa tus isreleased by the signal-sending station. 1 v

lily invention further contemplates the receipt of a double indicationfrom the station which called. My invention, however, is

i. not limiteicf course, to the embodiments above mentioned,

I will now describe this invention more by means of the accompanying. iJ .7 istrating one embodiment hereof. l have here shown two line Wires ad 2, uniting'a central station, or train r s station, A, and a station Eas a '1 al receiving station,- which station B is of a plurality ofsimilarly construct-ed stations on the same line conductors 1 and 2, alladapted to be operated by mechanism similar to that shown at station E,with the exception that the step-up mechanism, or other select -emechanism employed to call the particular station desired is setdifferently for the dificrent stations, as is common in the -t, and itis not thoughtnecessary these drawings to illustrate additional stationsB, the station, B being a type of a plurality of signal-receivingstations connected to the same line Wires 1 and 2, and being under thesupervision of the central station A.

Referring more particularly to the station A, l have here shown adespatchers telephone set comprising the head telephone 3, inductioncoil l, battery 5, transmitter 6, and condenser 7, wires 1 and 2. Thistelephone set is adapted to cooperate with the telephone set at the,

v nient in Signaling, Systems,

bridged across the line station E, and the rest of the stations whichmay beconnected along these line Wires, and the sub-station l3 telephonesets being similarly connected to those at the station A, I havedesignated them by. the same numerals, with the exception that I show,

in addition, as a' substation device, the

in a bridge across the line conductors 1 and 2, and is operated byimpulses from the central station battery 10, through the agency of thekey :11, which key sends positive impulses from said battery by theinstrumentalities shown, consisting of the pole-changing switch 12 overthe line wires 1 and'2,

to energize the relay 9 in e given manner.

The relay 9 is also cap bit )I energization in a dilferent manner, whenthe key 13 is operated, which closes the circuit through the battery14:, and a relay 15, the enel gizw tion of said relay 15' serving toattract the pole-changing switches or reversing switch 12, to reversethe polarity of the current sent over the line wires 1 and 2 by thebattery -10, thus to actuate the relay 9 in a dilierent manner. 'iissumethat positive impulses actuate the relay 9, so that its floatingarmature 16 is attracted in a manner to close contact with the contact17, thereby to opera-- tively energize the relay 18, thereby to step upthe step-up mechanism 19 sutliciently to close contact between its arm20 and the sprin 21, the arm 20, of course, being set differently fordifferent stations, so that a varied number of impulses is necessary'tocall the dillerent stations, as is Well understood in the art. Theimpulses are sent so rapidly until the desired station s reached that nosubstation relay has time to act merely when the arm 20 passes spring 21in its continued forward movement. suming that sufiicient impulses havebeen transmitted to step up the mechanism 19, so that parts 20 and21]cont-act, circuit is then closed through battery 22, 10W" wound relay28, contact point 24, armature '25, arm 26, back to the contact arm 20-.The actuation of the relay 23 operates its armature 27which-thereuponfpermits the sluggish movlit) If the key 11 at thestation A, which'sends the positiveimpulses, is 'held in its closedposition after the parts 20 and 21, contact, then therelay 23 willremain energized a sulticiently long time to finally permit the sluggishmoving element 28 to come into engagement with the contact point 29. Ifthis takes place, a circuit is established through a battery 31,localsignal' 32, and magnet 33, as will be more clearly describedhereinafter. Now, however, should the lever 11 be actuated a sufiicientnumber of times to arrange for contact between the elements 20 and 21,but said lever 11 not held down in its closed position but releasedafter making its last impulse, then the slug-. gish moving element 28will not have time, before the armature 27 falls back, to make contactwith the contact point 29-, by reason of the fact that the armature 25does not remain a sufficient length of time in contact with the contactpoint 24, and circuit conditions are established as follows: From theelement 19, through the arm 20, the element 21, the battery 22, the lowwound relay 23, the high wound relay 34, the armature 25, the arm 26,back'to the element 19. On ac count of the inclusion of'the very v highresufiicient currentcan pass to the relay.2 3 to operate it, as thewindings are arranged for that purpose, but the high-wound relay 34 hassutficient ampere turns to cause its armature 35 to draw up, thusclosing. circuit through battery 36 and a second local signal 37, whichincludes therewith a magnet 38. It will be seen that the central stationA, therefore, can operate with the same position of the element 19,either one of the two local signals, namely, 32 or 37, and conjointlytherewith, either one of the two magnets 33 or 38. When either one ofthe magnets 33 or 38 operates, their respective armatures, 39. or 40,are drawn out of en'- gagement with the wheels 41, 42, and either one ofthe rotating, contact-making wheels '43 or 44, as desired, begins acontinuous'rotation by virtue of the clock mechanism, as indicated, bythe springs'45 and 46. It will be thus seen that if the'local signal 32op-' crates, it releases the signaling mechanism 43, whereas, if thelocal signal 37 operates, it releases the signaling mechanism 44.

The continuous operation of the contact wheel 43 (assuming that one tohave been operated) alternately makes and breaks a circuit through thespring 47, by virtue of the slight insulation strips, as shown on thewheel 43. Similarly, if wheel 44 operates, it

closes circuit through the spring 48. The

'wheel 43 is. connected to ground, and the. springs 47 and 48 areconnected tothe center: of thetwo windings-49 and 50, which have theirremaining terminals connected to the line wires 1 and 2, thusestablishing a circuit condition whereby the springs 47 and 48 use theline wires 1 and 2 in parallel, with the ground as return circuit. Thiscircuit from the springs 47 and 48 is continuous over the now parallelline wires 1 and 2, and ends in similar impedance coils 51 and 52,arranged at 'the central station, where a terminalis taken out of thec'enter of these two windings 51 and 52, ;wl 1icli passes through thesounder '53, and from there through the battery 54 to the ground. Thesounder 53 also uses the line wires 1 and 2 in parallel, with the groundas return circuit, the same as 'the spring 47 and the spring 48. It willbe seen, therefore, that when the signal 32 operates, it starts inoperation the contactmaking wheel 43, which keeps continuously operatingand sending back impulses over the relay 53, to indicate thatsaidsi-gnal 32 has been actuated; 01"1f signal 37 operates,

' it starts the mechanism 44, which sends back impulses designed toindicate that signal 37 is operating; I use the word signal as ap pliedto the devices 32 and 37 in the broad sense of signal giving oroperating means.

In order to stop the devices and 44 from rotation, and at the same timerestore g the mechanism 19 to-normal, the key 13 is sistance relay 34 1nthis same circuit, nOtdepressed, which sends animpulse of op- ,posite'polarity to the relay 9, thereby closvmg contact with its other contactpoint 55, 'whereby magnet 56 is energized, the ener- .gization of whosearmature serves to -release the bars 26 and 57, thereby allowing themechanism 19 to return to normal, Magneto drops 60, and 61 areprovidedto fmaintain the continuous operation of the signals 32 an 37 after theyhave been started until manually stopped by the at tendant uponrestoration. of thea'rmatures of said drops as is wellunderstood.Included serially with the relay. 56, are magnets 58 and'59, whichrespectively are assoclated with the armatures 39 and 40. Thus,

.when the step-up mechanism 19 .is released and restored to normal,whichever armature, 39 or 40, has been drawn out, is drawn back by theconjoint .energization of the relays 58 and 59, and the. signal wheels43. and 44 are prevented from further rotation.

While I have herein shown and particularly described the preferredembodiment of my invention, I do not wish to limit myself to the preciseconstruction and arrangement as herein set forth, but

' Having thus set forth its most salient features, what I claim as newand desire to secureby Letters Patent is:

tral station and sub-stations, a selective signal-receiving device ateach sub-station, switching. devices at .the central station forselecting the same, a signal-sending device 1. A. signaling systemconsisting of a cenateach sub-station, a signal-rose v vice at thecentral station responsive to indications from the. sub-stationsignal-sending devices, automatic means associated with the sub-stationsignal-receiving device to start, when actuated, the sub-station signal-sending device and devices controlled at the central station forstopping the oper- 51161011 of the substation signal-sending de ,vicewithoutdisturbing est-ablishedline coiinections between said stations. Iv

2. A. signaling system consisting of a'central station and substations,a selective signalreceiving device at each sub-station, switchingdevices at the central. station for selecting the same, a signal sendingdeviceat each sub-station, a .signal receiving device at the'centralstation responsive to indications from the si 1bstation signal send ingdevices, automatic means associated with the sub-stationsignal-receiving device to start, when actuated, the substationsignal-sending device, and devices controlled at the central station forstopping, irrespective of the operation of the sub-station.

signal, the operation otsaid sub-station signal-sending device.

A signaling system consisting of a central station and sub-stations, aselective signal-controlling device at each Sub-station, a

device starts in operation its associated s1g-1 nal-sei'iding device.

A signaling system consisting of a cen: tral station and sub-stations, aselective signal-controlling device at each sub-station, a plurality ofsignal-operating devices under the control thereof,switching devices atthe central station for selecting said signalcontrolling devices andalso selecting the signal operating devices associated there with, asignal-sending device at each Sill)- station for each signal-operatingdevice, a signal-receiving device. at the central station -for receivingthe indications of said substation signal-sending devices, automaticmeans whereby the ope ation of a signaloperating device starts inoperation its asso ciated signal-sending device, and devices controlledat theciait-ral station for stop-i ping, irrespective of the operation.of the sub-station si nal-operating devices, the 'operation of saidsub-station signal -sending devices.

5; A signaling system consisting of a central station and sub-stations,aselecti nal receiving device at each sub switching" devices atthe-central station for selecting same, a signal-sencling device, at. ech sch-station, local means for continu.-' ously operating said devicewhen started, signal receiving device at the central station responsiveto indications from the sub-stag tion signal sending dev ces, automaticmeans associated with the sub-station signal-receiving'device to start,W191i actuated, the. substation signal --sending device and devicescontrolled at the central station for stopping ing device.

the operation of the substation signal-send- 6. A signaling systemconsisting of ace-m tral station and sub-stations, a selectivensi nalreceiving device at each sub-station,

switching devices at the central station for selecting same, aSignaLsendingdevice at each substation, local means for continuouslyoperating said device when started, a signal-receiving device at thecentral station responsive to indications from the suo-- station 1signal Sending devices, automatic means associated. with the substationsig nal-receiving device to start, when actuated, the substationsignal-sending device, and switching devices controlled at' the centralstation for stopping, irrespective of the operation of thesub-statiori'signal, the operation of said sub station signal sendingdevice.

7. A signaling system consisting of a central station and sub-stations,a selective sigiial-conti'olling device at each sub-station, a

started. a signal-receiving device at the central station for receivingthe indications'of said sub-station signal-sending devices, andautomatic nieans'wliereby the operation of a signal-operating devicestarts in operation its associated signal-sending device.

7 A signaling system consisting of a central station and sub-stations,.aselective sig- 7 nal-controllii'ig device at each substation, aplurality of signal-operating devices under the control thereof,switching devices at the central station for selecting saidsignal-controlling devices and also selecting the signaloperatingdevices associated therewith a signal-sending device at each sub-Sta,tion for each signal-operating device, local means for continuouslyoperating said device whcn started, a signal-receiving device at thecentral station for receiving the indications of said sub-stationsignal-sendi11g devices, automatic means whereby the opercentral stationfor selecting the sub-station signals, a sub-station signal-sendingdevice, automatic means tor starting same when the local signal thereatoperates, and devices controlled at the central station for stopping theoperation of said sub-station signal-sending device independently of theoperation ofthe sub-station signal.

10. A signaling system comprising a central station and sub-stations, asignal at each sub-station, means controlled at the central station forselecting the sub-station signals, a sub-station signal-sending device,automatic means for starting same when the local signal thereatoperates, a signal receiving device controlled at the central stationresponsive thereto, and devices at the central station for stopping theoperation of said sub-station signal-sending device independently of theoperation of said sub-station signal.

11,. A signaling system comprising a cen tral station and substations, asignal at each sub-station, switching means at the central station forselecting thesubstation signals, a sub-station signal-sending device,automatic means for starting same when the local signal thereatoperates, a signalreceiving device atthe central. station responsivethereto, means associated with each sub-station s1gnal-sending device,whereby its signals to the central station are distinctive, and devicescontrolled at the central station for stopping the operation of saidsub-station signal-sending device independently of the operation of thesubstation signal. l

12. A signaling system vcomprising a central station and substations, asignal at each sub'station, switching means at the central station forselecting the sub-station signals, a sub station signal-sending device,local means for continuously operating said device when started,automatic means for starting same when the local signal thereatoperates,.and devices controlled at the central station for stopping theoperation ofsaid sub-station signal-sending device independently of theoperation of the substation. signal.

13. A signaling system comprising a central station and sub'stations, aselective sig-' naling device including a signaling means at eachsubstation, means at the central station to select the substationsignaling devices, return signal means associated with each substationsignaling device to indicate to the central station the operation of itsassociated signaling means,'and means controlled at the central stationto stop the operation of the return signal means independently of theoperation of the substation signaling means.

14:. A signaling system comprising a central station and substations, aselective signaling device including asignaling means at eachsubstation, means at the central station to select the substationsignaling devices, return signal means associated with each substationsignaling device to indicate to the central station the operation of itsassociated signaling means, said return signal means being adapted tooperate continu ously after starting until stopped by means controlledat the central station, and means controlled at the central station tostop the operation of the return signal means independently of theoperation of the substation signaling means.

In witness whereof, I hereunto subscribe my name this 19th day ofJanuary, A. 1).,

HARRY O. R'UGH. Witnesses:

MAX W. ZABEL, O. M. NERMIEL.

